Question

(a) Write names and formulae of hydrocarbons containing a single and a double bond (one example for each). Give one characteristic chemical property of each.
(b) What is a detergent? Name one detergent.
(c) Why have detergents replaced soap as a washing agent?

Answer 1

Explanation:

a) (i)Single bond :-  Methane, CH4. They are unreactive therefore they undergoes a substitution reaction along with chlorine in existence  of sunlight.

$CH_{4} + Cl_{2} -> CH_{3} Cl+ HCl$

(ii) Double bond :-  Ethene, CH2 = CH2. They undergo addition reaction even  in the presence of catalyst like nickel .

$CH_{2} =CH_{2} + H_{2} -> CH_{3} - CH_{3}$

b) Detergent are nothing but ammonium or sodium salt  which having cleansing properties when dipped into water.

Ex:-  Sodium n-dodecyl benzene sulphonate( light yellow sand-like solid)

c)Detergents are used as washing agents because they can wash clothes in both soft and hard water, on the other hand soap do not produce lather easily with hard water

You can get all the answers of Chapter 4 in the link below:

https://brainly.in/question/13880481

 

Few questions related to this chapter:    

"(a) How does ethanoic acid react with sodium hydrogen carbonate? Give equat.....

brainly.in/question/14916395

(a) What happens when methane reacts with chlorine? Give equation of the re.....

brainly.in/question/14916378